May 28 (Reuters) - Knowit Ab
* Knowit AB says inks framework agreement with Hansel
* Says can offer IT services to public authorities in Finland 2015-19.
* Says services in the categories covered by the agreement have been worth more than 20 mln euros per year.
* Says between 6 and 12 potential suppliers have been chosen within each of the three service categories Further company coverage: (Reporting By Simon Johnson)